SE9602005D0 - Channel in data and telecommunication systems - Google Patents

Channel in data and telecommunication systems

Info

Publication number
SE9602005D0
SE9602005D0 SE9602005A SE9602005A SE9602005D0 SE 9602005 D0 SE9602005 D0 SE 9602005D0 SE 9602005 A SE9602005 A SE 9602005A SE 9602005 A SE9602005 A SE 9602005A SE 9602005 D0 SE9602005 D0 SE 9602005D0
Authority
SE
Sweden
Prior art keywords
receiver
nodes
transmitter
spare
cable
Prior art date
Application number
SE9602005A
Other languages
Swedish (sv)
Other versions
SE9602005L (en
Inventor
Bengt Johansson
Lars Egnell
Magnus Oeberg
Original Assignee
Ericsson Telefon Ab L M
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9602005A priority Critical patent/SE9602005L/en
Publication of SE9602005D0 publication Critical patent/SE9602005D0/en
Priority to AU29867/97A priority patent/AU2986797A/en
Priority to PCT/SE1997/000845 priority patent/WO1997045977A1/en
Publication of SE9602005L publication Critical patent/SE9602005L/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0278—WDM optical network architectures
    • H04J14/0283—WDM ring architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0287—Protection in WDM systems
    • H04J14/0293—Optical channel protection
    • H04J14/0295—Shared protection at the optical channel (1:1, n:m)

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

The present invention relates to an optical fibre network that includes a cable having at least two optical fibres and at least two nodes interconnected with the cable, so that the nodes will be disposed in a ring. The nodes and the cable together form a bidirectional bus for transmitting and receiving on wavelength channels. Each node includes at least one spare transmitter and at least one spare receiver having a particular wavelength, and the network includes means for detecting faults on a transmitter/receiver in a node. The invention also relates to a method of detecting faults in the nodes and of switching from a degraded transmitter/receiver to the spare transmitter/spare receiver in the abovementioned optical fibre network.
SE9602005A 1996-05-24 1996-05-24 Optical fiber network with backup transmitters and receivers SE9602005L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9602005A SE9602005L (en) 1996-05-24 1996-05-24 Optical fiber network with backup transmitters and receivers
AU29867/97A AU2986797A (en) 1996-05-24 1997-05-22 Channel protection in data-communication and data telecommunication system
PCT/SE1997/000845 WO1997045977A1 (en) 1996-05-24 1997-05-22 Channel protection in data-communication and data telecommunication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9602005A SE9602005L (en) 1996-05-24 1996-05-24 Optical fiber network with backup transmitters and receivers

Publications (2)

Publication Number Publication Date
SE9602005D0 true SE9602005D0 (en) 1996-05-24
SE9602005L SE9602005L (en) 1997-11-25

Family

ID=20402702

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9602005A SE9602005L (en) 1996-05-24 1996-05-24 Optical fiber network with backup transmitters and receivers

Country Status (3)

Country Link
AU (1) AU2986797A (en)
SE (1) SE9602005L (en)
WO (1) WO1997045977A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1305668A (en) * 1998-02-24 2001-07-25 艾利森电话股份有限公司 Protection of WDM-channels
US6915075B1 (en) 1998-02-24 2005-07-05 Telefonaktiebolaget Lm Ericsson (Publ) Protection of WDM-channels
ITMI991276A1 (en) * 1999-06-09 2000-12-09 Cit Alcatel METHOD FOR THE RECOVERY OF UNIDIRECTIONAL PATHS BETWEEN MORE NODES IN THE CASE OF TRANSOCEANIC RINGS TYPE MS-SP RING FOR TELECOMMUNICATIONS SDH
CN100431288C (en) * 2002-11-21 2008-11-05 中兴通讯股份有限公司 Method and device for implementing service protection by using tunable light source
CN113541775B (en) * 2021-09-15 2022-01-28 北京国科天迅科技有限公司 Optical fiber bus fault reconstruction system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993014574A1 (en) * 1992-01-10 1993-07-22 Fujitsu Limited Optical transmission system
US5740157A (en) * 1992-05-21 1998-04-14 Alcatel Network Systems, Inc. Distributed control methodology and mechanism for implementing automatic protection switching
JPH0786988A (en) * 1993-09-16 1995-03-31 Fujitsu Ltd PCA transmission apparatus and PCA transmission method

Also Published As

Publication number Publication date
AU2986797A (en) 1998-01-05
WO1997045977A1 (en) 1997-12-04
SE9602005L (en) 1997-11-25

Similar Documents

Publication Publication Date Title
US6661972B1 (en) Method and apparatus for transparent optical communication with two-fiber bidirectional ring with autoprotection and management of low priority traffic
JP3657994B2 (en) Improvement of optical add / drop wavelength division multiplexing system or related improvements
US6005694A (en) Method and system for detecting optical faults within the optical domain of a fiber communication network
US7272321B1 (en) Passive optical network
US7212541B2 (en) Wavelength division multiplexed (WDM) ring passive optical network (PON) with route protection for replacement of splitter based passive optical networks
WO1998047039A3 (en) Method and apparatus for operation, protection, and restoration of heterogeneous optical communication networks
AU9456098A (en) Fault location and performance testing of communication networks
US4946244A (en) Fiber optic distribution system and method of using same
SE9501193D0 (en) Optical network and device and method therein
US20040076114A1 (en) Method and apparatus for shared protection in an optical transport network ring based on the ODU management
SE9500404D0 (en) Procedure in an optical bus network
WO1998052314A2 (en) An add and drop node for optical communication systems
SE9501075D0 (en) Device and method in an optical bus network
US5930017A (en) Method and system for maintaining an optical path
SE9602005D0 (en) Channel in data and telecommunication systems
CA2051252A1 (en) Bidirectional light waveguide telecommunication system
US5594581A (en) Low loss optical transmission/monitoring path selection in redundant equipment terminals
CN212785357U (en) Multifunctional optical monitoring channel module
Butler et al. Wave-division multiplexing in the Sprint long distance network
NZ260626A (en) Optical fibre subscriber network
USRE42095E1 (en) Method for transferring utility optical signals and optical-line network
CN1787417B (en) An optical transponder for wavelength division multiplexing system
Jacobs Design considerations for long-haul lightwave systems
US6583898B1 (en) Optical transmission device and method for checking transmission in an optical transmission device
WO1999018679A1 (en) An optical network with protection path for failure recovery

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 9602005-2